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IAWQ Asia-Pacific Regional Conference <6. ; 1997 ; Seoul>
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IAWQ International Symposium on Systems Analysis and Computing in Water Quality Management <4. ; 1997 ; Quebec City>
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International Specialised Conference on Biofilm Systems <3. ; 1996 ; Copenhagen>
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International Workshop on Rainfall in Urban Areas <3. ; 1997 ; Pontresina>
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Biennial Conference of the International Association on Water Quality <19. ; 1998 ; Vancouver>
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Biennial Conference of the International Association on Water Quality <18. ; 1996 ; Singapore>
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International Symposium on Forest Industry Wastewaters <5. ; 1996 ; Vancouver>
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